• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

An proxy often referred to as a proxy server is software that functions as a mediator between a client and server on the internet. Without the need for a proxy, an individual can send a request for the item to an online server and the server would deliver the resource directly back to the client. While this is a simple method to grasp and implement, the addition of proxies can provide advantages in terms of enhanced performance and privacy, security and much more. Alongside offering a security layer proxy servers also act as a security guardian for the internet, separating clients from servers.

There is a general consensus that the server hardware along with installed proxy software is also frequently called proxy servers. However, this article will concentrate on proxies typically classified as software, and in the web server context. We will provide a brief overview of the two main types of proxies, which include a forward proxy and reverse proxy. reverse proxy. Each has its own specific usage that can cause confusion due to a similar naming convention.

This article will give you an idea of what proxies are and the subtypes of them, as well as how they work in the common configurations. By reading this article, you'll learn to recognize the circumstances that are the best to use a proxy, and choose the best option between forward and reverse proxy, in any situation.

Understanding Forward Proxies

In another way a forward proxy, also referred to as or an open proxy serves as the representative of a customer who wishes to forward a request via the internet to an origin server. In this situation, any request made by the client will instead be sent direct to the forward proxy. This forward proxy in instead of the user will examine the request. The first step is to determine if the user is authorized receive requests from this particular forward proxy. Then, it decides if it wants to reject an request and transfer it onto the original server. The client is unable to access directly the internet. It only has access to what forward proxy allows its access.

The most common reason to utilize forward proxy servers is to improve privacy or security on the internet. A forward proxy can be used to access the internet instead of a client and, in this way it could utilize a different IP address than the IP address originally that the client uses.

Based on the way it was previously configured forward proxy servers are able to provide a range of options. They allow you to:

• 
  
• 
  Beware of ad-tracker.
  
  
• 
  Circumvent surveillance.
  
  
• 
  You will be able to identify any limitations based on your geographic location.
  
  

Forward proxies are also utilized in systems that offer central security and permission-based access, like at work. When all internet traffic passes through an open forward proxy layer administrators are able to restrict access to specific clients on the internet filtered through an common firewall. Instead of putting firewalls in place for the client layer which may comprise a range of computers with different user and environment the firewall can be placed within the forward proxy layer.

Note that the forward proxy setting must be manually set up to use and reverse proxy settings are ignored by clients. Depending on whether the IP address of a client is passed to the original server through the forward proxy privacy and anonymity may be granted or denied.

There are several possibilities to consider for forward proxies

• 
  
• 
  Apache is a well-known open-source web server with forward proxy capabilities.
  
  
• 
  Nginx: Another well-known open-source webserver with forward proxy features.
  
  
• 
  Squid: A no-cost forward proxy that makes use of the HTTP protocol. Squid isn't a complete Web server service. Check out our step-by-step guide to set up Squid proxy to allow private connections within Ubuntu 20.04.
  
  
• 
  Dante forward proxy which runs on the SOCKS protocol instead of HTTP which makes it better appropriate for scenarios such as peer-topeer traffic. You can also look into the procedure for installing an Dante proxy to connect privately in Ubuntu 20.04
  
  

Understanding Reverse Proxies

A reverse proxy serves as a representative of web servers, which handles any requests that come in from clients on its behalf. The web server may include one server or several servers. Also, it could be a server for applications like Gunicorn. In any of these situations, an application request comes through the internet generally. In the majority of cases, the request will be directed directly to the server that hosts the information the client is seeking. Reverse proxy, however, serves as an intermediary shielding Web servers from direct interactions with the web's public.

From a consumer's point of view that is from a user's perspective, working with a reverse proxy is no any different from using direct connections to an internet server. It's exactly the same thing, however the user is unable to be able to discern the difference. The client asks for an item and receives it, without any additional configuration required from the client.

Reverse proxies can provide features such as:

• 
  
• 
  Centrally secured for Web Server Layer.
  
  
• 
  Controlling traffic coming inbound according to rules you can design.
  
  
• 
  The caching functionality has been added to the app.
  
  

While central security is a benefit of both forward and reverse proxy servers, reverse proxy providers offer this feature to only the server layer and only the layer that clients use. Instead of maintaining firewalls for the web server layer, which may contain many servers with different configurations, the bulk of firewall security can be focused at the reverse proxy layer. Additionally, removing the responsibility of interfacing with a firewall as well as dealing with client requests without the need for web servers enables them to focus on meeting the needs of their customers.

When there is a multitude of servers being hosted by a reverse proxy, the reverse proxy is also responsible to direct which requests are routed at the server. There may be several web servers offering identical content offering various types of resources or a mixture of both. They can use the HTTP protocol in the same way as a traditional web server, but they can include other protocols for application servers like FastCGI. You can also set up reverse proxy servers to redirect clients to specific servers in accordance with the requested resource or to comply with specific rules pertaining to traffic load.

Reverse proxies can also make use of their location prior to web servers by providing the ability to cache. Massive static resources can be configured by using caching rules in order to avoid the web server from being hit with each request. There are even solutions that allow you to serve static assets directly without connecting to the web server once. In addition reverse proxy is able to handle compression of these assets.

The well-known Nginx web server is also used as an extremely popular reverse proxy solution. Although Apache is also a reverse proxy solution but Apache is a reverse proxy service. Apache web server is also able to function complete with the reverse proxy function that is an added characteristic of Apache however Nginx was designed initially for and focuses on its reverse proxy feature.

Differentiating Forward Proxy and reverse Proxy Use Examples

Because "forward" as well as "reverse" are associated with directionality, and false comparisons with "incoming" as well as "outgoing" traffic the labels can be confusing because both types of proxy are able to handle requests and responses. The best way to distinguish between reverse and forward proxy is to look at the specifications of the application that you are building.

Reverse proxy is beneficial when creating a web-based applications over the internet. They are your web servers when you interact on the internet.

Forward proxy can be useful when it is displayed in front of clients for personal use or within a corporate environment. They are your client's representative when you interact with the internet.

The use of case-based differentiation instead of focusing on the common naming conventions can aid in eliminating confusion.

Conclusion

This article clarified the definition of a proxy, which includes two types that are forward and reverse proxy. Practical applications and a review of the beneficial characteristics were employed to identify between reverse and forward proxies. If you're interested to learn more about how to set up proxy servers, you can refer to our guide on how you can configure Nginx as a web server and reverse proxy with Apache in an Ubuntu 20.04 server.

In the event you liked this article as well as you would want to acquire more information concerning Proxy Sites generously pay a visit to the web site.